jack5481
jack5481
18-09-2020
Mathematics
contestada
— 2х + y = 0
— 7х + 3y = 2
Respuesta :
angelabum04
angelabum04
18-09-2020
answer : x=-2 and y=-4 or (-2,-4)
1. y=2x
-7x+3y=2
2. substitute
-7x+3(2x)=2
3. -7x+6x =2
4. -x=2
x=-2
5. sub into original equation
y=2 (-2)
y=-4
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